Elevator



(No Model.) 2 Sheets-Sheet 1..

C. R. OTIS;

' ELEVATOR.

' No. 390,033. Patented Sept. 25, 1888.

Fig.1.

fissi- 2 Sheets-Sheet 2 O. .R. OTIS.

(No Model.)

ELEVATOR.

Patented Sept. '25

I vr 8 u a n. 0 m w m l ,v z s a 1 a J J .t v a J h h j 0 .yr 6 a K a. r l 2 a :[IQV r\ I r v n m Srnrn's PATENT @rmch.

'cHAnLns 'n. oris, on YONKERS, NEW YORK.

'E'L'EVATQ e.

SPECIFICATION forming part of Letters Patent No. 390,033,8atd E-ieptember 25, 1888.

7 Application filed February 18, 1888. Serial No. 264,529. (No model.)

' To all whomit may concern.- 7

Be it lrnown that I, CHARLES R. Orrs, a citizen oi' the United States, residing zit-Yonkers, Westchester county, New York, have invented certain new and useful Improvements in Elevators, of which the following is a specification.

-My invention relates to that class of elevators in which the movement of a valve through to the "medium of devices controlled from the cage or platform is the means of stopping and starting the cage, and especially. of that class in which electromotors are employed in con nection with the valve-actuating devices; and

I 5 my invention consistsin means, fully set forth hereinafter, for preventing the shocks and strains usually resulting from the sudden opening and closing of the main valve.

In the accompanying drawings, Figure 1 is. an elevation of a hydraulic elevator, embodying myimprovements.- Fig. 2 is an enlarged vertical section of the elevating-engine. Fig. 3 is a sectionalelevation illustrating my invention in connection with an elevator-engine 2 5 in which the valve is shifted directly by hand,

In those classes of machines or engines in which it is desirable to operate the controllingvalves from distant points-as elevators-and .where such valves are actuated by electricity,

the enginesare frequentlysubjected to severe strains from being abruptly stopped'and started, the controllingvalves being shifted by single quick movements, at once fully-opening or closing the ports, and bringing the 5 full force of the motor-fluid suddenly upon or.

cutting it oh. from the main piston. Thus in the hydraulicelevator illustrated in Figs. 1 and 2 the main-piston valve-E in the valve-chest D controlstheflow of motor- 0 fluid to and from the cylinder A, containing 4 :nectedl-with th valve E y a s e 1',

chest "9', andvalve ,e,control'ling thexflow of mo'tocfluidfroma supply-pipe, h, and thereby controlling also the'shlfting of the-main valve.

As shown, the valve e is arocking valve,.. and an arm, f, on the valve-stem isconnected oids l, electricallylin circuit with a battery, and with conductors leading to the cage (3, where a suitable switch, J, serves to'makeor break the circuit through the wires to excite or discharge the solenoids, and thereby change the positions of I the cores and of the valve c,

connected therewith. Thus the solenoids are depressed to reverse the valve and put the lower part of the cylinder in communication with the supply and raise thepiston d, and by exciting both sections 3 4 the cores are carried to central positions with. both coils, andthe valve is set to cut off the flow of motor-fluid and arrest the piston. The sections are in line with a battery, Z, and a circuit may be completed to include the battery and either or both sections through wires "5 6 7 by shifting the switch J in the car 6 so as to connect with a terminal, 9, of the wire 7, the terminal 100i the wire 6, or two terminals, 10 and 1l,of both wires.

It will be seen that each movement of the cores is instantaneous, so that the valve 6 is either opened, closed, or shifted by a single impulse, and the pressure of the motor-fluid is thrown on or ofi so suddenly as to produce sudden shocks, which are very disagreeable to passengers in the cage and detrimental to the machinery. To obviatethese objections to the use of electrical valve movingdevices, I combinetherewith a valve or cook, which I term a,regulating-valve, which is arranged to gradually throttle oropen av passage for -the motor-fluid prior to arresting or starting the engine, so that the full force of the said fluid -which would otherwise result. 4 lhe regulating-valve is shown as a dampervalve, t, arranged in the pipe k, so as to nearly "closethe same when moved to a. transverse toaspider carrying a series of cores, tofsolenl: position, permitting aslight flow of motorcannot be brought into action until the enfluid, however, suflicient to start the engine when the valve 0 is opened.

The valve n occupies its transverse or closed position when the valve e is closed and the en'- gine G is at rest, but is connected with the piston d or other moving part of the engine, so as to be opened after the piston has moved to a slight extent in either direction from its central position, and also to gradually close as the said piston approaches a middle position. Different connecting means may be employed, that shown consisting ofa rod, q, extending from the piston d through the head of the cylinder b, and carrying the pivot of an arm, 1', pivoted at its other extremity to the end of a pendent arm,'s, fixed on the stem of the valve n. \Vhen the valve n is closed, the arm swill be vertical and the arm r occupy a horizontalv position, and if the end pivoted to the rod q rises or falls the valve n will be gradually opened.

As shown in the drawings, the main valve E closes the outlet-port 19 from the main cylinder, and the main engine is at rest, but the operator in the qage has shifted the switch J to the contact 9, and the cores have been drawn down and the valve e shifted to throw the motor-fluid below the piston d to lift the valve E.

Instead of the sudden upward movementof the piston d and valve E, and the equally sudden uncovering of the port 19, the valve n so throttles the supply-pipe k that but a'small volume of motor-fluid can pass to the cylinder b and the piston 'd starts but slowly; but after a short movement of the piston d the draft of the arm 1' on the arm 8 swings the latter outward until the valve n is opened and permits the free the valve E closes the port 19 the arm 1' will.

swing in the arm 8, and the valve 11 is shifted so that the motor-fluid is almost entirely out off as the valve E is brought toa position to close the port 19, and the final part of the movement is made so gradually that the engine is brought to a stop without any shock. The same results ensue if the valve E is moved downward to open the connection between the ports 19 20. I

It is not essential to place the regulatingvalve in the pipe, h, supplying the motorfluid to the auxiliary engine. It may be put in the main pipe h, supplying the'motorlluid to the main cylinder, as shown in dotted lines, Fig. 2, the valve being shifted by two bearings, 1 1", through the medium of a lever, u, and connecting-rod u. The'efl'ect is the same in each case. 1

While I have illustrated and described my regulating-valve in connection with an auxiliary engine and with electrical valve-shifting 1. The combination, with the main valve and the electric valve-operating devices of an engine, of a regulating-valve for said engine, controlling the flow of the motorfluid thereof, and connected with the main valve, to throttle the flow of motor-fluid as the main valve approaches or moves from a closed position, substantially as described.

2. The combination, in an elevator-engine, of a main valve, a regulating-valve therefor arranged in a supply-pipe and connected with the main valve, and an auxiliary valveoperating engine provided with a valve connected with an electric motor, substantially as described.

3. The combination, with an electricallycontrolled valve of an elevating-engine, of a regulating-valve therefor in a passage for the motor-fluid thereof, and a main valve connected with the regulating-valve to shift it, substantially as described.

4. The combination, in an elevator, of the main engine provided with a valve, an anxiliary engine connected to operate'tlie main valve, an electromotor connected to the valve of the auxiliary engine, and a regulating-valve controlling the flow of motor-fluid to the auxiliary engine and connected with the main valve, substantially as described.

5. The combination, with the cylinder and piston of an elevator-engine, and with a valve controlling the movements of said engine and connected with the cage to be operated therefrom, of a regulating-valve in a supply-pipe for said engine connected with said controlling-valve, substantially as described.

6. The combination, with the piston and cylinder and main valve, and connections be tween the latter and cage of an elevator, of a supplemental valve in a supplypipe for said engine connected to the main-valve'shifting.

for the motor-fluid of said engine, provided with a regulating-valve therein, connected with the main valve, substantially as described.

9. lhe combination, with the valve and anxiliary valveoperating engine of an elevator, of a regulating-valve controlling the supply to the auxiliary engine and connected with the main valve to be operated therewith, substantially as described.

10. The combination of the main engine and main valve of an elevator, an auxiliary engine, and a supply-pipe for said engine, and

a regulating-valve therein connected with themain-valve to move therewith, substantially as described, the arrangement being such as to gradually and automatically close the supply 0f motor-fiu idto the auxiliary engine as the main valve takes its position to arrest the movement of the main piston.

' 11.-The combination, with the elevator-enwhich is connected with the main valve, a

supply-pipe for said engine, and a regulatingvalve therein connected to the piston-rod of theauxiliary engine,substantiallyasdescribed.

12. The combination, in an elevator, of the main valve, supply pipe, regulating-valve therein controlling the supply of motor-fluid and connected with the main valve to move therewith, and a main-valve-operating device extending to the cage, substantially as described.

In testimony whereof I have'signed my name to this specification in the presence of two snbscribing witnesses.

' CHAS. It. OTIS Witnesses:

SIDNEY J CoWENs, ALFRED B. JAWOROWER. 

